Fireproof door



A. V. KELLY.

FIREPROOF DOOR. APPLlcATloN FILED MN. 14, 192|.

1 ,408,302, Patented Feb. 28, 1922.

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AMER-OSE VENCENT -KELL'E-, OF BROOKLYN, NEW YORK. f

FERRERO OE f DOGR.

`Specfieati'on of Letters Patent. Patented Feb 28 1922 Application filed anuary ifiVlfL Serial No. 437,338.

To @ZZ whom may concern:

vBe it known that l, rlirsnosn V. citizen of the United States, and aresident of the city 0i New York,-borough of Brookflyn, in the county of Kings and State ol" N ew `York, have invented a. new and lmproved Fireproof Door, of which the lollowing is a full, cleaiyand exact description.

The present invention rel tes to new and useful improvements in sl .ing doors and it pertains more particularlyA `'todoorsot this character commonly known as fire doors and used between the compartments in vlire-proof buildings. Doors ci this type are generally maintained in open position by means of counter weightsy or "similar 51? vices controlled by fusible links, said doors being mounted upon an inclined track in order Vthat they may automatically move to closed Vposition upon operation of the fusible ln doors or the typek just described, however, great difficulty is experienced in opening` the same since such doors in order to properly perform their functions, must necessarily be constructed from heavy terial, and owing to the inclined track the operation ci moving the heavy doors up the incline of the track is not easilyaccomplished. i y

lt is one ci the objects of thepresent invention to so mount these doors that they may be moved along a true horizontal `track with littler effort. f Y

lt is a further objectoi the inventionl to so construct the track on whichthe doors are mounted that the saine is automatically moved to an inclined position in order that the door may automaticallyclose.

in constructions as above mentioned it is obvious that when the track is in the true horizontal position, the bottom edge of the door must necessarily be spaced with relation to the floorY ci the building, and it is a further object of the invention to provide means which will close the space between the bottom edge ci the door and the floor of the building, and, at the same time, will permit of i'iree and easy operation ci the door.

llTith the above and other objects in View, reference is had to the accompanying` drawings, in which Figure l is a iront elevational view, partly in section, of a door opening and door constructed in accordance with the present invention g is a. vertical sectional view taken line Q /lof Fig. l, and

. '.ig. 3 is a detail vertical sectional view taken on uthe line 3"*3 of Fig l. y

ierring more` particularly to the draws, the reterence` character t5 designates a reor opening, vand 6 represents the door which isV adapted to close 'the opening. The door 6 has its upper edge inclined as indicated by theyreference,character 7, and secured to said upper edge are door hangers 8 said hangers being :fastened to the door means of bolts 9.` carry rollers l0, and said rollers are adapted ior rolling engagement upon a track 1l.

The track ll is pivotally mounted at its rear end, as indicated by the i'eiierence character l2, and is adapted to swine' tothe'dotted-.line position shown in Figl, in which 'position its forward endis supported by meansl of a bracket or the like 13. L orvsupporting the track ll in the true ioiizpoiitai position shown in full linesy in nig. l, a trigger 14; is pivotally mounted as l5, and said trigger comprises two rioid arms i6' and l.A The trigger le is nnisintained inthe position shown in Fig. i, by means oi"- a cord vorV the'like 19, secured at one end,` as at i8, to the arm l of the trigger, the other end oli" said cord 19 being provided with aV rin@` QO'adapted to be received by a hooked member 2l. This cord i9 passes around a pulley 2:2, and interposed on the'cord at a suitable 'point between its ends ise- "3 isible link 2d of any suitable nature.

ligidly secured to the wall adjace-iu` free end ci" the track ll, by suitable fastening'means 28,' is a guide member 2l, and said guide member 2a is adapted to guide the free end ci the track il.

llfounted in brackets 30 above the track ll, is a supplemental track 25, and mounted hangers 2?. llepending from each of the hangers 27, is a rod 28 and rigidly secured to the lower ends of said rods as at 29, is a. pan-like structure 30, which pan-like structure is adapted to receive the lower edge of the door 6. rlhese rigid rods 28 are secured to the pan-like member 30 in such a manner that the member 30 will be supported just out ci contact with the licor in order that it may travel with the door as the latter moves to open and closed position.

lilith the parts in the position shown in Fig. l, if it is desired to close the door, the

rEhese hangers 8 eachk effected by a fusing of the fusible link 24:, which fusible link 24 serves to part the cord 19. As the cord 19 parts, the support for the trigger lll is destroyed, and said trigger rocks about its pivotal point l5 to the position shown in dotted lines in Fig. l andV permits the track ll to fall to rest upon the bracket 13, as shown in'dotted lines in Fig. l. lVhen the track ll has fallen to the position shown in dotted lines, it will be apparent that the door will travel down the incline to closed position until it` engages the brackets 3l where it will be retarded. Uwing Ato the door 6' being received -within the pan-like member 30, it will be apparent that as the track ll drops to the lower position, the door will move downwardly into the pan-like member 30, and as the door travels to closed position by reason of the engagement of its forward edge .with the forward end of the pan-like member 30, the latter will be moved with thedoor in order that the space between the bottom edge of the door and the floor may at all times be substantially filled.

What is claimed is:

l. In a device of the character described, a door, a pivoted track, means for supporting the track in true horizontal position, and means for releasing the support of said trac-k to permit the same to automatically assume an inclined position in order that the door may automatically move therealong to closed position. n

2. In a device of the character described, a door,'a pivoted track for supporting the same, and fusible means for supporting one end of said pivoted track normally in a true horizontal plane.

3. In a device of the character described,

for an automatic movement of the door therealong, and means forclosing the space between the bottom edge of the v`door and the bottom edge of the door opening with which the door is adapted to coact. v

5. In a device of the character described, a door, a pivoted trac-k, a fusiblelink adapted to automatically release said track to provide for an automatic movement ofthe door therealong, a supplemental track, and means supported by said supplemental track and movable by the door for closing the' yspace between the bottom edge of the door` and the door opening with which the door is adapted to coact.

6. In a lire door, in combination with a door opening, a track pivoted at one end, a door carried upon said track, means for supporting the free end of said track, and

a fusible link in said supporting means whereby upon the fusing of said link the track is permitted to assume an inclined position to permit of a movement ofthe door tlierealong by gravity.

7. In combination with a door opening, a self-,closing door comprising a track pivoted at one of its ends and adapted to normally occupy a true horizontal plane, and fusible means connected insaid supporting means whereby uponfusing of the fusible means the track automatically assumes an inclined` positionto permit of freemovement of the door therealong under the influence of gravity.V

AMBROSE VINCENT KELLY. 

